CN2741086Y - Stepless temperature regulator of electrothermal cooking device - Google Patents
Stepless temperature regulator of electrothermal cooking device Download PDFInfo
- Publication number
- CN2741086Y CN2741086Y CN 200420089808 CN200420089808U CN2741086Y CN 2741086 Y CN2741086 Y CN 2741086Y CN 200420089808 CN200420089808 CN 200420089808 CN 200420089808 U CN200420089808 U CN 200420089808U CN 2741086 Y CN2741086 Y CN 2741086Y
- Authority
- CN
- China
- Prior art keywords
- temperature
- electric heating
- cooking
- level comparator
- regulating device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides the step-less temperature regulator of the electrothermal cooking device, comprising a thermal resistor for measuring the temperature, a level comparator, and a rectification power supply. The step-less temperature regulator of the electrothermal cooking device is characterized in that the compare standard voltage of the level comparator is provided by a divider circuit composed of two fixed resistors and is sent to the opposite phase end of the level comparator; the input signal voltage is provided by a divider circuit composed of a variable resistor for setting the temperature and a thermal resistor for measuring the temperature and is sent to the same phase end of the level comparator, and the output signal of the level comparator is the signal of the power switch of the electrothermal device. The positions of the variable resistor for setting the temperature and the thermal resistor for measuring the temperature can be exchanged in the divider circuit, and the utility model has the advantages of simple and convenient operature, flexible and accurate temperature control, and simple and beautiful external appearance. Through a potentiometer hand stopper which is arranged on the control panel of the electric heating utensil, the user can not only control the heating or closing of the electric heating utensil which is used for cooking, but also can proceed the micro regulation or the step-less regulation to the heating temperature of the electric heating utensil for cooking according to the personal will, and the arbitrarily set heating temperature can be realized.
Description
Technical field
The utility model relates to configuration or the installation with the control assembly of electric energy heating appliances, relates in particular to a kind of stepless temperature-regulating device of electric heating appliance for cooking.
Background technology
On the control panel of more existing electric heating appliances for cooking, be provided with some preset temperature value buttons, during use, the user can be switched in default temperature value according to the needs of the cooking.The drawback of this temperature control equipment, the one, can not be used for the cook temperature of electric heating appliance is carried out high precision fine setting control, the 2nd, the user can only be limited to default temperature value to the adjusting of electric heating appliance cook temperature.The user regulates and control the dirigibility of electric heating appliance cook temperature, is to be directly proportional with the complexity of electric heating appliance control panel.If, just need the corresponding more button of setting up for the user provides how selectable temperature control value to improve the dirigibility of user's regulating and controlling temperature, so both increased the complexity of electric heating appliance control panel, influenced the attractive in appearance of electric heating appliance control panel again.Chinese patent CN2365546Y has announced a kind of " single knob controlling heating of electromagnetic oven and attemperator ", but knob interlock one control piece of this device, signal is sent into a control module and control/driver, analog line driver is to drive control stove inner inductive coil, and the control piece rotating shaft is connected to positive supply, and be provided with the sectional type carbon film coating that contacts and contain two groups of resistance values with control piece in the knob relative position, one end of this carbon film coating is spaced-apart as the shutdown zone, the other end is respectively with pin Access Control unit, this control piece can not rotate to different section carbon film coatings in the same way, or transfer to and separate the place, but thereby the heating of the single knob controlling electromagnetic oven of mat, insulation or shutdown, with simplification electromagnetic oven running program, and make its operation more light easily.But this device is to the temperature control of electromagnetic oven, and the sectional type that only limits to heat, be incubated or shut down is controlled, and still can not realize fine setting and step-less adjustment to the cook temperature of electromagnetic oven.
Summary of the invention
The technical problems to be solved in the utility model is that a kind of stepless temperature-regulating device of electric heating appliance for cooking is provided.It can carry out fine adjustment and step-less adjustment to the heating-up temperature of electric heating appliance for cooking according to user intention.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
The stepless temperature-regulating device of this electric heating appliance for cooking, comprise thermometric thermistor, level comparator and rectifier power source thereof, the bleeder circuit that the benchmark voltage of level comparator is made up of two fixed resistances provides, deliver to the end of oppisite phase of level comparator, the bleeder circuit that applied signal voltage is made up of with thermistor with variable resistor and thermometric design temperature provides, deliver to the in-phase end of level comparator, the output signal of level comparator is the power switch signal of electrothermal device.
Described design temperature can exchange with the position of thermistor in bleeder circuit with variable resistor and thermometric.
Described design temperature variable resistor is that its hand is pulled and placed the potentiometer of the fine-tuning of electric heating appliance control panel and step-less adjustment resistance value.
It is supportingly to have the rotary-type hand of knob to pull that described design temperature is pulled with variable-resistance hand, or supportingly has the type of the stirring hand of shifting block to pull.
Described thermometric thermistor is to place the heat sensitive sensor that can directly or indirectly detect thermoreceptor utensil temperature position.
Described thermometric thermistor is at least one.
The temperature regulating range of described stepless temperature-regulating device is any interval of 0～330 ℃.
Adopt said structure, the utility model is simple, convenient, and temperature control is flexible, accurate, and outward appearance has brief U.S..Pull by the potentiometer hand that places the electric heating appliance control panel, the user not only can control the heating or the shutdown of electric heating appliance for cooking, can also carry out fine adjustment and step-less adjustment to the heating-up temperature of electric heating appliance for cooking according to the wish of oneself, realize setting arbitrarily its heating-up temperature.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Fig. 1 is the circuit diagram of the utility model embodiment.
Fig. 2 is the user mode synoptic diagram that adopts the electromagnetic oven of the utility model embodiment.
Embodiment
A kind of stepless temperature-regulating device of electromagnetic oven
This device comprises thermometric thermistor R
T, level comparator 1 and rectifier power source 2 thereof, the benchmark voltage of level comparator 1 is by two fixed resistance R
1, R
2The bleeder circuit of forming provides, and delivers to the end of oppisite phase of level comparator 1, and applied signal voltage is by design temperature variable resistor R
PWith thermometric thermistor R
TThe bleeder circuit of forming provides, and delivers to the in-phase end of level comparator 1, and the output signal of level comparator 1 is the power switch signal of electromagnetic oven high frequency heating coil 7.
The output signal of level comparator 1 cooperates the work of control electromagnetic oven with driving circuit 4, feedback circuit 5.Driving circuit 4 is used for driving power element 6, and for electromagnetic oven high frequency heating coil 7 provides high-frequency current, high frequency heating coil 7 is transformed into alternating magnetic field with high-frequency current, makes the vessel that are heated form eddy-current heating.Feedback circuit 5 is used for electromagnetic oven is carried out synchro control and over-current over-voltage protection.Rectifier power source 8 provides power supply for driving circuit 4, feedback circuit 5, and decompression rectification power 2 provides direct supply for level comparator 1.
Described design temperature variable resistor R
PIt is the pull continuous potentiometer of fine-tuning and step-less adjustment resistance value of the belt switch that places electromagnetic oven control panel 11 of its hand.
Described design temperature variable resistor R
PHand to pull be supportingly to have the rotary-type hand of knob 12 to pull.
Described thermometric thermistor R
TIt is indirect detection be heated heat sensitive sensor of vessel 13 temperature in place's in the middle of placing below the electromagnetism boiler face microcrystal glass plate 21.
The temperature regulating range of described stepless temperature-regulating device is any interval of 0～330 ℃.
Stepless temperature-regulating knob 12 on the electromagnetic oven control panel 4 is turned clockwise variable resistor R
PSwitch S connect variable resistor R
PBe in the resistance of a certain setting, owing to rigidly connect energize, the temperature in the vessel 13 that are heated is lower, passes to thermistor R through microcrystal glass plate 21
TTemperature also lower, thermistor R
TResistance just bigger, by variable resistor R
PWith thermistor R
TThe applied signal voltage that the bleeder circuit of forming provides is higher than by two fixed resistance R
1, R
2The benchmark voltage that the bleeder circuit of forming provides, deliver to the in-phase end of level comparator 1, the output signal of level comparator 1 makes driving circuit 4 maintain duty, 6 pairs of electromagnetic oven high frequency heating coils 7 of driving power element provide high-frequency current, high frequency heating coil 1 is transformed into alternating magnetic field with high-frequency current, make the vessel that are heated form eddy-current heating, the temperature in the vessel that are heated progressively rises.Along with the rising of temperature, thermistor R
TResistance diminishes gradually, when the temperature in the vessel that are heated rises to the temperature of setting, by variable resistor R
pWith thermistor R
TThe applied signal voltage that the bleeder circuit of forming provides is lower than benchmark voltage, the output signal of level comparator 1 quits work driving circuit 4, driving power element 6 stops to provide high-frequency current to electromagnetic oven high frequency heating coil 7, electromagnetic oven quits work, temperature no longer rises, and reaches the purpose of temperature control.
Stepless temperature-regulating knob 12 on the electromagnetic oven control panel 4 is turned clockwise variable resistor R
PIncrease, be in the resistance of another setting, benchmark voltage is changeless, make driving circuit 4 maintain duty, just requires thermistor R
TAlso along with variable resistor R
PIncrease and increase, the temperature of being heated in the vessel of respective markers is along with variable resistor R
PIncrease descend.The temperature scale dish of stepless temperature-regulating knob 12 adapteds is left side temperature value height, and the right temperature value is low.The user can carry out fine adjustment and step-less adjustment to the heating-up temperature of electromagnetic oven according to the needs of the cooking, realizes setting arbitrarily its heating-up temperature.As long as the arbitrary temperature value between rotation stepless temperature-regulating knob 12 identify to the temperature scale dish 330～0 ℃ just can be controlled the temperature that electromagnetic oven is operated in this setting, cook needs to satisfy.
With variable resistor R
PWith thermistor R
TLocation swap in bleeder circuit, stepless temperature-regulating knob 12 index dials sign from left to right, corresponding modify become sign from right to left.
Claims (7)
1. the stepless temperature-regulating device of an electric heating appliance for cooking, comprise thermometric thermistor, level comparator and rectifier power source thereof, it is characterized in that: the bleeder circuit that the benchmark voltage of level comparator is made up of two fixed resistances provides, deliver to the end of oppisite phase of level comparator, the bleeder circuit that applied signal voltage is made up of with thermistor with variable resistor and thermometric design temperature provides, deliver to the in-phase end of level comparator, the output signal of level comparator is the power switch signal of electrothermal device.
2. according to the stepless temperature-regulating device of the described electric heating appliance for cooking of claim 1, it is characterized in that: described design temperature can exchange with the position of thermistor in bleeder circuit with variable resistor and thermometric.
3. according to the stepless temperature-regulating device of the described electric heating appliance for cooking of claim 1, it is characterized in that: described design temperature variable resistor is that its hand is pulled and placed the potentiometer of the fine-tuning of electric heating appliance control panel and step-less adjustment resistance value.
4. according to the stepless temperature-regulating device of the described electric heating appliance for cooking of claim 3, it is characterized in that: it is supportingly to have the rotary-type hand of knob to pull that described design temperature is pulled with variable-resistance hand, or supportingly has the type of the stirring hand of shifting block to pull.
5. according to the stepless temperature-regulating device of the described electric heating appliance for cooking of claim 1, it is characterized in that: described thermometric thermistor is to place the heat sensitive sensor that can directly or indirectly detect thermoreceptor utensil temperature position.
6. according to the stepless temperature-regulating device of claim 1 or 5 described electric heating appliances for cooking, it is characterized in that: described thermometric thermistor is at least one.
7. according to the stepless temperature-regulating device of the described electric heating appliance for cooking of claim 1, it is characterized in that: the temperature regulating range of described stepless temperature-regulating device is any interval of 0～330 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420089808 CN2741086Y (en) | 2004-08-18 | 2004-08-18 | Stepless temperature regulator of electrothermal cooking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420089808 CN2741086Y (en) | 2004-08-18 | 2004-08-18 | Stepless temperature regulator of electrothermal cooking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2741086Y true CN2741086Y (en) | 2005-11-16 |
Family
ID=35351371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420089808 Expired - Fee Related CN2741086Y (en) | 2004-08-18 | 2004-08-18 | Stepless temperature regulator of electrothermal cooking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2741086Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152251A (en) * | 2016-08-15 | 2016-11-23 | 珠海格力电器股份有限公司 | gear control method, circuit and electric heater |
-
2004
- 2004-08-18 CN CN 200420089808 patent/CN2741086Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152251A (en) * | 2016-08-15 | 2016-11-23 | 珠海格力电器股份有限公司 | gear control method, circuit and electric heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |